WO2012060151A1 - Fil fixé à une cosse et procédé de fabrication d'un fil fixé à une cosse - Google Patents

Fil fixé à une cosse et procédé de fabrication d'un fil fixé à une cosse Download PDF

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Publication number
WO2012060151A1
WO2012060151A1 PCT/JP2011/070228 JP2011070228W WO2012060151A1 WO 2012060151 A1 WO2012060151 A1 WO 2012060151A1 JP 2011070228 W JP2011070228 W JP 2011070228W WO 2012060151 A1 WO2012060151 A1 WO 2012060151A1
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WO
WIPO (PCT)
Prior art keywords
terminal
wire
electric wire
bottom plate
water
Prior art date
Application number
PCT/JP2011/070228
Other languages
English (en)
Japanese (ja)
Inventor
拓次 大塚
平井　宏樹
小野　純一
美紀子 小坂
西條　英二
川瀬　治
猪上　琢也
田端　正明
丈博 中田
悟史 森川
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2012060151A1 publication Critical patent/WO2012060151A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve

Definitions

  • the present invention relates to an electric wire with a terminal and a method for manufacturing an electric wire with a terminal.
  • This electric wire with a terminal includes an electric wire whose outer periphery is coated with an insulating layer, and a terminal connected to the core wire exposed from the insulating layer.
  • the core wire exposed from the insulating layer is crimped (crimped) by a wire barrel provided in the terminal. Thereby, the terminal and the electric wire are connected.
  • the electric wire with a terminal is used in, for example, an engine room of an automobile.
  • Patent Document 1 and the like since water can normally enter the engine room, there is a possibility that water may come into contact with the connection portion between the terminal and the electric wire.
  • the terminal made of a metal material and the core wire are corroded.
  • the electric wire with a terminal described in Patent Document 1 is covered with a heat shrinkable tube around a connection portion between the terminal and the electric wire.
  • water may permeate from the periphery (circumferential direction) of the connection portion between the terminal and the electric wire, or may enter the connection portion between the terminal and the electric wire from the tip side of the terminal. .
  • This invention was completed based on the above situations, and it aims at providing the manufacturing method of the electric wire with a terminal excellent in waterproofness (waterproofness), and an electric wire with a terminal.
  • An electric wire with a terminal has a core wire and an insulating layer covering an outer periphery of the core wire so that the end of the core wire is exposed, a bottom plate on which the end of the core wire is placed, and the bottom plate
  • a pair of wire barrels extending from both side edges of the wire and crimping the core wire, a tip connected to the mating terminal, the bottom plate and the tip are connected, and the inside is the axial direction of the wire
  • a terminal having a connecting portion formed in a groove shape extending to the connecting portion, a water blocking wall arranged in close contact with the connecting portion, and a tube shape so as to surround at least the bottom plate and the wire barrel.
  • Water barrier against metal That the resin workpiece that is processed into a predetermined shape and having a surface with an adhesive, is provided by fitting on the inside of the connecting portion.
  • the infiltrate is blocked by the water blocking wall.
  • the core wire or the like is prevented from being in contact with the infiltrated material and being corroded.
  • the water blocking wall is provided by fitting a resin processed product having a surface having adhesion to a metal and processed into a predetermined shape inside the connecting portion. Therefore, since the water blocking wall is not provided outside the bottom plate, it is possible to set the diameter of the water blocking wall portion to be smaller by that amount.
  • the manufacturing method of the electric wire with a terminal which concerns on this invention has an electric wire which has an insulating layer which coat
  • the bottom plate, a pair of wire barrels extending from both side edges of the bottom plate and crimping the core wire, a tip connected to the mating terminal, and the inside of the bottom plate and the tip are connected.
  • a terminal having a connecting portion formed in a groove shape extending in the axial direction of the electric wire, a water stop wall arranged in close contact with the connecting portion, and forming a tube shape so as to surround at least the bottom plate and the wire barrel
  • a waterproof coating that covers the terminal so that the front end thereof closely surrounds and surrounds the outer periphery of the insulating layer from the water blocking wall to the connecting portion.
  • the resin processed product can be attached (assembled) simply by fitting inside the connecting portion, for example, compared to the case where the water blocking wall is formed by molding, the time for forming the water blocking wall is longer. The manufacturing cost can be reduced.
  • the present invention it is possible to provide a terminal-attached electric wire excellent in waterproofness (waterproofness) and a method of manufacturing the terminal-attached electric wire.
  • FIG. 1 is a perspective view of a terminal-attached electric wire according to Embodiment 1 of the present invention.
  • FIG. 2 is a side view of the electric wire with terminal.
  • FIG. 3 is a cutaway cross-sectional view of the main part of the electric wire with terminal.
  • FIG. 4 is a perspective view of a resin processed product used for the water blocking wall.
  • FIG. 5 is an explanatory view showing a process of fitting the resin processed product into the groove of the terminal.
  • FIG. 6 is a cross-sectional view of a water blocking wall erected on the bottom plate of the terminal.
  • 7 is a cross-sectional view taken along line AA of the electric wire with terminal shown in FIG. FIG.
  • FIG. 8 is a plan view showing a state in which a plurality of terminal pieces are connected to a carrier so that they are arranged.
  • FIG. 9 is an explanatory diagram (plan view) illustrating a process in which the terminal piece to which the resin workpiece is attached is subjected to heat treatment.
  • FIG. 10 is an explanatory view (perspective view) showing the process of placing the electric wire on the bottom plate of the terminal.
  • FIG. 11 is a plan view of a terminal on which an electric wire is placed on the bottom plate.
  • FIG. 12 is a plan view of an electric wire to which a terminal is attached by crimping a wire barrel and an insulation barrel.
  • FIG. 13 is a cutaway cross-sectional view of the main part showing a state where an unheated heat-shrinkable tube is put on the electric wire to which the terminal is attached.
  • FIG. 14 is a cross-sectional view of a molded water stop wall portion of a terminal-attached electric wire according to a comparative example.
  • FIG. 15 is a cross-sectional view of a resin processed product used in another embodiment.
  • FIG. 16 is a cross-sectional view showing a state where the resin processed product shown in FIG. 15 is fitted into the bottom plate of the terminal.
  • a terminal-attached electric wire 1 includes an electric wire 2, a terminal 3 attached to an end of the electric wire 2, a water blocking wall 4 attached to the terminal 3, and the water stopping wall 4 At the same time, a tubular waterproof coating 5 is provided so as to surround the connection portion between the electric wire 2 and the terminal 3.
  • the electric wire 2 includes a single core wire 21 formed by twisting a plurality of fine metal wires and an insulating layer 22 made of a synthetic resin that covers the outer periphery of the core wire 21.
  • the material constituting the core wire 21 include copper, a copper alloy, aluminum, an aluminum alloy, and the like, which are appropriately selected from arbitrary metal materials as necessary.
  • aluminum or an aluminum alloy is used as the material of the core wire 21.
  • the insulating layer 22 at the end portion of the electric wire 2 is removed. Therefore, the end portion of the core wire 21 is not covered with the insulating layer 22 and is exposed.
  • the core wire 21 may be a single core wire.
  • the terminal 3 is a so-called female type and is connected to a mating male terminal (not shown).
  • This terminal 3 is obtained, for example, by pressing a metal plate material into a predetermined shape.
  • the metal material constituting the terminal 3 include copper and copper alloys, and are appropriately selected from arbitrary metal materials as necessary.
  • a plating layer (not shown) is formed on the surface of the metal plate constituting the terminal 3 of the present embodiment.
  • a metal which comprises a plating layer tin, nickel, etc. are mentioned, for example, It selects suitably from arbitrary metal materials as needed.
  • a tin plating layer is formed on the surface of the metal material (copper or copper alloy) constituting the terminal 3.
  • a metal plate material on which no plating layer is formed may be used as the material of the terminal 3.
  • the terminal 3 includes a bottom plate 31, a wire barrel 32, a tip portion 33, a connecting portion 36 that connects the bottom plate 31 and the tip portion 33, and an insulation barrel 34.
  • the bottom plate 31 has a shape extending along the axial direction of the electric wire 2 with both edges standing so that a groove 35 is formed inside.
  • the bottom plate 31 has a curved bottom surface and a substantially U-shaped cross section. Both the end portion of the core wire 21 exposed from the insulating layer 22 of the electric wire 2 and the distal end portion of the insulating layer 22 are placed on the bottom plate 31 so as to fit inside the groove 35.
  • a pair of wire barrels 32 facing each other are provided on both edges of the bottom plate 31 in the portion where the core wire 21 is placed.
  • the wire barrel 32 has a plate-like shape, and is provided so as to rise from both edges of the bottom plate 31 before the terminal 3 is attached to the electric wire 2.
  • the wire barrel 32 is crimped (crimped) to the core wire 21 so as to hold the core wire 21 on the bottom plate 31.
  • a pair of insulation barrels 34 facing each other are provided on both edges of the bottom plate 31 where the tip portion of the insulating layer 22 is placed.
  • the insulation barrel 34 is in the form of a plate that is narrower than the wire barrel 32, and is provided so as to rise from both edges of the bottom plate 31, like the wire barrel 32, before the terminal 3 is attached to the electric wire 2. Yes.
  • the insulation barrel 34 is pressure-bonded to the insulating layer 22 so as to embrace the tip of the insulating layer 22 placed on the bottom plate 31.
  • the distal end portion 33 is extended to the front side of the bottom plate 31 and has a cylindrical connecting tube portion 331 having a substantially square cross section.
  • An elastic contact piece 332 (see FIG. 9) that elastically contacts a mating male terminal (not shown) is provided in the connecting cylinder portion 331.
  • the elastic contact piece 332 is in elastic contact with the male terminal, whereby the terminal 3 and the male terminal are electrically connected.
  • the connecting portion 36 has a groove shape whose inner side extends in the axial direction of the electric wire 2 (left-right direction in FIG. 3). As will be described later, the water blocking wall 4 is provided in a part of the connecting portion 36.
  • the water blocking wall 4 is manufactured using a resin processed product 41 processed into a predetermined shape.
  • the resin processed product 41 of the present embodiment has a substantially cylindrical shape, and is processed into a shape that fits inside the bottom plate 31 in the connecting portion 36 having a groove shape.
  • the resin material used for the resin processed product 41 include a metal-adhesive good adhesive elastomer (trade name: Perprene (registered trademark), Toyobo Co., Ltd.). This resin material has moderate rigidity (elasticity) and exhibits adhesiveness to metal by heat treatment.
  • thermoplastic adhesive has adhesiveness to the metal.
  • the melting point of the base material portion in the resin material is about 170 ° C.
  • the melting point of the portion that exudes as described above is about 120 ° C.
  • the resin processed product 41 has no adhesiveness to metal and is easy to handle.
  • Such a resin processed product 41 is obtained, for example, by extruding a resin material into an elongated cylindrical molded product using an extrusion molding apparatus and cutting the molded product into a predetermined shape (size).
  • the resin processed product 41 is fitted inside the connecting portion 36 (that is, the groove 35).
  • the width of the groove 35 in the connecting portion 36 is set to be slightly smaller than the diameter of the resin processed product 41 having a substantially circular cross section.
  • the resin workpiece 41 is fitted (press-fit) and attached to the inside (groove 35) of the connecting portion 36 set to such a width (groove width).
  • the resin workpiece 41 attached in this way is erected so as to close the groove 35 inside the connecting portion 36.
  • the resin processed product 41 has moderate elasticity, and is in close contact with the inner surface 361 of the connecting portion 36 so as to push back from the inner side of the connecting portion 36 toward the outer side.
  • work which attaches the resin workpiece 41 to the terminal 3 may be performed before attaching the electric wire 2 to the terminal 3, and may be performed after attaching the electric wire 2 to the terminal 3.
  • the resin processed product 41 fitted inside the connecting portion 36 is then heat-treated (first heat-treated) together with the terminals 3.
  • This heat treatment is performed in order to bring the outer peripheral surface 42 of the resin processed product 41 and the inner surface (metal surface) 361 of the joint portion 36 in close contact with each other without any gap.
  • a liquid resin material thermoplastic adhesive
  • the resin material that has oozed out enters between the outer peripheral surface 42 of the resin processed product 41 and the inner surface 361 of the connecting portion 36 during the heat treatment, and the space between them is liquid-tightly sealed.
  • the liquid resin material cools and hardens. As a result, the resin processed product 41 is fixed in close contact with the bottom plate 31 without gaps, and becomes the water blocking wall 4.
  • the water blocking coating 5 has a tube shape and is covered between the water blocking wall 4 and the end of the insulating layer 22 so as to surround at least the bottom plate 31 and the wire barrel 32. In other words, the waterproof coating 5 is covered so as to surround the connection portion between the terminal 3 and the electric wire 2.
  • the opening end 51 on the distal end side of the water blocking coating 5 is in close contact with the water blocking wall 4 and the connecting portion 36 of the portion that supports the water blocking wall 4.
  • the opening end portion 52 on the rear end portion side of the water blocking coating 5 is in close contact with the insulating layer 22 so as to surround the insulating layer 22 at the base of the core wire 21 (the front end portion of the insulating layer 22).
  • the waterproof coating 5 of the portion existing between the front opening end 51 and the rear opening end 52 tightens the connection portion between the terminal 3 and the electric wire 2 from the outside. So close.
  • the tubular water-stop coating 5 exposes the exposed core wire 21 and the terminal 3 on the rear side of the portion where the water-stop wall 4 is provided (that is, the wire barrel 32, the insulation barrel 34, and the bottom plate 31). And the end portion of the insulating layer 22 are covered.
  • the water-stop coating 5 of the present embodiment is a so-called heat shrinkable tube, and is made of a synthetic resin material that shrinks by heat treatment (second heat treatment).
  • an adhesive layer or a pressure-sensitive adhesive layer (not shown) is formed on the inner peripheral surface of the water blocking coating 5.
  • the adhesive layer or the pressure-sensitive adhesive layer develops adhesiveness or tackiness by being heated and softened or melted.
  • the adhesive or the pressure-sensitive adhesive used for the adhesive layer or the pressure-sensitive adhesive layer a publicly known one used in this type of electric wire with terminal 1 can be applied. In other embodiments, the adhesive layer or the pressure-sensitive adhesive layer may not be provided on the inner peripheral surface of the waterproof coating 5.
  • FIG. 7 is a cross-sectional view taken along line AA of the electric wire with terminal shown in FIG.
  • the opening end portion 51 of the water blocking coating 5 that has been heat-shrinked by the heat treatment includes a water blocking wall 4 (resin processed product 41) and a connecting portion 36 that supports and supports the water blocking wall 4. It is closely attached so as to surround (tighten). In this manner, the water blocking wall 4 (resin processed product 41) that protrudes upward from the bottom plate 31 is also covered with the water blocking coating 5.
  • a metal plate material is subjected to a punching process to form a carrier 300 having a strip shape and a plurality of terminal pieces 30 connected to the side edges of the carrier 300. That is, the plurality of terminal pieces 30 are collectively connected to the carrier 300.
  • the carrier 300 is formed with feed holes 301 arranged at substantially equal intervals along the longitudinal direction. As the feed hole 301, a substantially circular shape and a substantially rectangular shape are alternately arranged.
  • the feed hole 301 is set so that a feed claw (not shown) provided in a processing machine (not shown) is engaged.
  • a plurality of terminal pieces 30 are connected to the carrier 300 so as to be arranged at substantially equal intervals along the longitudinal direction.
  • the terminal piece 30 has a flat plate shape and is provided so as to correspond to each part (the bottom plate 31, the wire barrel 32, the insulation barrel 34 and the tip portion 33) constituting the terminal 3.
  • a plurality of recesses 37 may be formed on the bottom plate 31 where the wire barrel 32 is extended.
  • the concave portion 37 has a substantially quadrangular shape (substantially parallelogram shape), a pair of first sides substantially perpendicular to the extending direction of the core wire 21 (electric wire 2), and the extending direction of the core wire 21 (electric wire 2) from 90 °. Also comprises a pair of second sides that intersect at a small angle.
  • the adjacent recesses 37 are arranged such that the first sides are arranged in a straight line and the second sides are arranged in a straight line.
  • Such a concave portion 37 can increase the fixing force between the wire barrel 32 and the core wire 21 while suppressing a decrease in the electric resistance value.
  • these recessed parts 37 may be formed in a process different from punching.
  • the resin processed product 41 (see FIG. 4 and the like) that has been processed into a predetermined shape in advance in the groove 35) is press-fitted (fitted) by an assembly machine.
  • the resin processed product 41 is formed by extruding a predetermined resin material having adhesiveness to a metal into an elongated columnar molded product using an extrusion molding apparatus, and the molded product is formed into a predetermined shape (that is, a connecting portion 36). (Shape to fit inside and close groove 35) (resin processed product manufacturing process). Note that the movement of the carrier 300 is stopped while the resin workpiece 41 is fitted inside the connecting portion 36. After the fitting, the movement of the carrier 300 is resumed.
  • a heat treatment step (first heat treatment step) is performed on the terminal piece 30 (terminal 3) into which the resin processed product 41 is fitted.
  • a thermoplastic adhesive having adhesiveness to the metal oozes out from the resin processed product 41, and the resin processed product 41 is separated from the joint portion 36 by the oozed thermoplastic adhesive. Adhere closely.
  • the terminal pieces 30 (terminals 3) into which the resin processed product 41 is fitted are sequentially sent into the heating device 6. While passing through the heating device 6, a heat treatment step is performed. In this way, the heat treatment process is continuously performed on the plurality of terminal pieces 30 (terminals 3).
  • the terminal piece 30 after the heat treatment process has the end portion of the electric wire 2 placed on the bottom plate 31 (see FIG. 10).
  • the insulating layer 22 is removed from the terminal portion of the electric wire 2 so that the core wire 21 is exposed in advance. At this time, the exposed core 21 portion is placed on the bottom plate 31 where the wire barrel 32 is formed. Then, the insulating layer 22 at the base of the core wire 21 (the end portion of the insulating layer 22) is placed on the bottom plate 31 of the portion where the insulation barrel 34 is formed.
  • the connection part 36 exists in the front side of the core wire 21, and the water stop wall 4 is erected in the connection part 36 (refer FIG. 11).
  • the wire barrel 32 and the insulation barrel 34 of the terminal 3 are crimped (crimping) using a crimping device (not shown). Process).
  • the wire barrel 32 is crimped to the core wire 21, and the insulation barrel 34 is crimped to the end of the insulating layer 22 (see FIG. 12).
  • a pair of insulation barrel 34 is crimped
  • a cutting process for separating the terminal piece 30 from the carrier 300 is performed at the same time.
  • an unheated cylindrical water-stop coating 5 made of a heat-shrinkable tube is placed so as to surround the connection portion between the electric wire 2 and the terminal 3.
  • the water blocking coating 5 may be inserted and covered from the terminal 3 side, or may be inserted and covered from the electric wire 2 side.
  • the inner diameter of the waterproof coating (heat-shrinkable tube) 5 in the unheated state is set to be larger than the connection portion between the electric wire 2 and the terminal 3.
  • the water blocking coating 5 is positioned in consideration of the amount of heat shrinkage so that the opening end 51 on the front side and the opening end 52 on the rear side can surround the connection portion between the terminal 3 and the electric wire 2.
  • the electric wire 2 and the terminal 3 covered with the heat-shrinkable tube (water-stop coating) 5 are subjected to a heat treatment step (second heat treatment step) in a heating device (not shown).
  • a heat treatment step second heat treatment step
  • the water-stop coating 5 made of a heat-shrinkable tube is thermally contracted, and an adhesive layer (not shown) formed on the inner peripheral surface of the water-stop coating 5 develops adhesiveness.
  • the inner surface (inner peripheral surface) of the water blocking coating 5 is in close contact with the connecting portion of the electric wire 2 and the terminal 3 without a gap corresponding to the surface shape (see FIG. 3 and the like).
  • the terminal-attached electric wire 1 in which the connecting portion between the electric wire 2 and the terminal 3 is surrounded by the cylindrical water-stop coating 5 is obtained.
  • the terminal-attached electric wire 1 obtained in this manner is excellent in waterproofness because it includes the water blocking wall 4 and the water blocking coating 5.
  • the water blocking wall 4 is erected in the groove 35 on the front side (connecting portion 36) of the bottom portion 31. Since the wall 4 and the connecting portion 36 that supports and supports the water blocking wall 4 are surrounded by the water blocking coating 5 (opening end 51), water may enter the rear side of the water blocking wall 4. It is suppressed.
  • the terminal-attached electric wire 1 can be provided simply by fitting the resin workpiece 41 that will later become the water blocking wall 4 into the curved connecting portion 36 of the terminal 3. Then, by performing heat treatment (first heat treatment) in a state where the resin processed product 41 is fitted, the surface (outer peripheral surface 42) of the resin processed product 41 and the inner surface 361 of the joint portion 36 are liquid-tight. Can be easily adhered.
  • the water blocking wall 4 of the present embodiment has excellent heat resistance depending on the resin material used. Thus, even if it is the water stop wall 4 excellent in heat resistance, the water stop wall 4 can be easily attached to the predetermined position of the terminal 3 by selection of the resin material to be used.
  • FIG. 14 is a cross-sectional view of a molded water blocking wall 4A portion in a terminal-attached electric wire 1A according to a comparative example.
  • the water blocking wall 4A of the terminal-attached electric wire 1A is integrally formed with the bottom plate 31 of the terminal 3 by molding. Therefore, the water blocking wall 4 ⁇ / b> A is formed so as to wrap the bottom plate 31. That is, a part of the water blocking wall 4 ⁇ / b> A is also formed around the bottom plate 31.
  • the water blocking wall 4 of this embodiment is formed only inside the bottom plate 31 as shown in FIG. 7 and the like, the diameter is smaller than that of the water blocking wall 4A formed by molding. Easy structure.
  • the resin processed product 41 is used in which the thermoplastic adhesive oozes out from the surface during the heat treatment, but in other embodiments, for example, as shown in FIG.
  • a resin processed product 41 including a core material 411 having a circular cross section and a skin material 412 covering the outer peripheral surface of the core material 411 may be used.
  • the core material 411 may be formed of a resin material having a melting point of about 170 ° C.
  • the skin material 412 may be formed of a resin material (adhesive plastic resin) having a melting point of about 120 ° C. In this case, the skin material 412 is melted and deformed during the heat treatment, and becomes an adhesive component having adhesiveness to metal.
  • the resin processed product 41 having such a configuration is also provided by being fitted (press-fitted) inside the connecting portion 36.
  • the skin material 412 portion of the resin processed product 41 is melted and deformed so as to conform to the shape of the inner surface 361 of the joint part 36.
  • the outer peripheral surface 42 of the resin processed product 41 that is, the surface of the skin material 412
  • the inner surface 361 of the connecting portion 36 are bonded, so that the resin processed product 41 and the connecting portion 36 are liquid-tight.
  • the core material 411 does not melt even when the heat treatment is performed as described above, and maintains the shape of the resin processed product 41.
  • the terminal 3 includes the insulation barrel 34. However, in other embodiments, the terminal 3 may not include the insulation barrel 34.
  • the opening end 52 on the rear side of the water blocking coating 5 is in close contact so as to surround the insulating layer 22.
  • the open end 52 may be brought into close contact with the resin ring.
  • the terminal 3 is a so-called female type.
  • the terminal 3 may be a male type or a round type terminal (so-called LA terminal). Good. That is, the shape of the terminal 3 may be appropriately selected according to the purpose.
  • the shape of the water blocking wall 4 (resin processed product 41) is a columnar shape, but in other embodiments, the cross section is a columnar shape such as an elliptical shape, an oval shape, or a rectangular shape. It may be a thing. That is, the shape of the water blocking wall 4 may be appropriately selected according to the inner shape of the connecting portion 36 in the terminal 3.
  • the water-stop coating 5 is formed in a cylindrical shape in advance, but in other embodiments, for example, a sheet-like water-stop tape is used as the electric wire 2 and the terminal. It is also possible to use one that is wound around the three connecting portions and formed into a cylindrical shape.
  • a heat treatment for bringing the water blocking wall 4 (resin processed product 41) into close contact with the connecting portion 36 of the terminal 3, and a water blocking coating 5 comprising a heat shrinkable tube.
  • these heat treatment steps may be performed simultaneously.
  • the crimping process for crimping the terminal 3 to the electric wire 2 and the cutting process for separating the terminal piece 30 (terminal 3) from the carrier are performed simultaneously.
  • the cutting process may be performed before the crimping process, or the crimping process may be performed after the cutting process.
  • a heat-shrinkable tube is used as the water-stop coating 5, but in other embodiments, for example, a tubular member having elasticity such as a rubber tube is used as the water-stop coating 5. May be.
  • the resin processed product 41 is manufactured by extruding a predetermined resin material.
  • the resin material is formed into a sheet using a T-die. It is possible to produce a resin processed product having a predetermined shape by molding the sheet into a sheet (sheet molding) and punching the sheet-like molded product.
  • the terminal-attached electric wire includes a core wire, an electric wire having an insulating layer covering the outer periphery of the core wire so that a terminal end of the core wire is exposed, and both ends so that a groove can be formed inside.
  • the rear opening end is in the core wire
  • a tubular water stop coating that tightly surrounds the original insulating layer, wherein the water stop wall has an adhesive surface to a metal and is processed into a predetermined shape
  • a resin processed product is provided by being fitted inside the bottom plate in the connecting portion.
  • the water blocking wall has a surface having adhesion to a metal and a resin processed product processed into a predetermined shape is fitted inside the joint portion. Provided. Therefore, since the water blocking wall is not provided outside the bottom plate, it is possible to set the diameter of the water blocking wall portion to be smaller by that amount.
  • the resin processed product is preferably composed of a core material and a skin material covering the outer peripheral surface of the core material, and the skin material is heated and melted and deformed to be bonded to the joint portion.
  • the water blocking wall may be provided by heat-treating the resin processed product after the resin processed product is fitted inside the joint portion. If a resin processed product that exhibits metal adhesion by heat treatment is used, a water blocking wall having excellent adhesion to the bottom plate of the terminal can be easily obtained.
  • the structure may include an insulation barrel that holds the insulating layer of the electric wire.
  • the metal constituting the core wire and the metal constituting the terminal may be different.
  • an adhesive layer or an adhesive layer is formed on the inner peripheral surface of the water blocking coating.
  • the adhesive layer or the pressure-sensitive adhesive layer is formed on the inner peripheral surface as described above, the water blocking coating can be easily adhered to the connection portion of the electric wire and the terminal.
  • the waterstop coating may be composed of a heat shrinkable tube.
  • a method of manufacturing a terminal-attached electric wire includes: an electric wire having a core wire and an insulating layer covering an outer periphery of the core wire so that the end of the core wire is exposed; A bottom plate to be placed, a pair of wire barrels that are extended from both side edges of the bottom plate and crimped to the core wire, a tip portion connected to a mating terminal, and a connection between the bottom plate and the tip portion And a terminal having a connecting portion formed in a groove shape extending in the axial direction of the electric wire, a water blocking wall arranged in close contact with the connecting portion, and at least the bottom plate and the tube in the form of a tube
  • the terminal is covered so as to surround the wire barrel, and the front end part closely contacts and surrounds the outer periphery from the water blocking wall to the connecting part, and the rear end part closely contacts and surrounds the outer periphery of the insulating layer.
  • a process for producing a terminal-attached electric wire wherein a resin composition having an adhesive property to a metal is processed into a shape that closes the connecting portion in a state of being fitted inside the connecting portion having a groove shape, A step of obtaining a workpiece, and a step of fitting the resin workpiece into the inside of the connecting portion to form the water blocking wall are executed.
  • the water blocking wall is processed into a predetermined shape that fits inside the bottom plate portion in the connecting portion and closes the groove by using a resin composition having adhesiveness to a metal, And forming the water stop wall by fitting the resin processed product into the bottom plate and standing up. That is, since the resin processed product can be attached (assembled) simply by being fitted inside the bottom plate, the water blocking wall formation time is shortened and manufactured compared to the case where the water blocking wall is formed by molding. Cost can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

La présente invention a pour objet de réaliser un fil fixé à une cosse qui présente une excellente imperméabilité (capacité d'étanchéité) et un procédé de fabrication du fil fixé à une cosse. Le fil fixé à une cosse (1) de la présente invention comprend un fil (2), une cosse (3), une paroi étanche (4) et un cache étanche (5). Une section de liaison (36) se trouve sur la pointe avant d'un fil d'âme (21) et la paroi étanche (4) est formée sur cette section. La paroi étanche (4) comprend une pièce en résine (41) dont la surface présente une adhérence aux métaux et qui est traitée afin de présenter une forme spécifique. La pièce en résine (41) est façonnée en étant ajustée à l'intérieur de la section de liaison (36). Le cache étanche (5) est cylindrique et une section d'extrémité ouverte (51) du côté avant de celui-ci adhère hermétiquement à la paroi étanche (4) et à une plaque de fond (31) d'une portion qui accueille et supporte la paroi étanche (4) de manière à les entourer, et une section d'extrémité ouverte (52) du côté arrière de celui-ci adhère hermétiquement à une couche isolante (22) du fil (2) de manière à entourer la couche isolante (22). Comme un corps étranger liquide contenant de l'eau est ainsi bloqué par la paroi étanche (4) même lors d'un déplacement depuis un côté de la section d'extrémité avant (33) de la cosse (3) vers le côté de la plaque de fond (31), la corrosion du fil (21) provoquée par une mise en contact avec un corps étranger est inhibée.
PCT/JP2011/070228 2010-11-05 2011-09-06 Fil fixé à une cosse et procédé de fabrication d'un fil fixé à une cosse WO2012060151A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010248995A JP5589779B2 (ja) 2010-11-05 2010-11-05 端子金具付き電線、及び端子金具付き電線の製造方法
JP2010-248995 2010-11-05

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WO2012060151A1 true WO2012060151A1 (fr) 2012-05-10

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JP2012169124A (ja) * 2011-02-14 2012-09-06 Auto Network Gijutsu Kenkyusho:Kk 端子金具付き電線

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JP5821799B2 (ja) * 2012-07-31 2015-11-24 株式会社オートネットワーク技術研究所 コネクタ
JP2014029768A (ja) * 2012-07-31 2014-02-13 Auto Network Gijutsu Kenkyusho:Kk コネクタ
JP6277983B2 (ja) 2015-03-20 2018-02-14 株式会社オートネットワーク技術研究所 端子固定治具及び熱収縮チューブ付電線の製造方法
JP6724857B2 (ja) * 2017-05-11 2020-07-15 住友電装株式会社 コネクタ

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JP2000285983A (ja) * 1999-03-31 2000-10-13 Sumitomo Wiring Syst Ltd 自動車用アース端子の防水構造
JP2001167640A (ja) * 1999-12-09 2001-06-22 Yazaki Corp 被覆電線の端末接続部およびその防水処理装置
JP2008176970A (ja) * 2007-01-17 2008-07-31 Komatsu Ltd 圧着端子
JP2010165630A (ja) * 2009-01-19 2010-07-29 Autonetworks Technologies Ltd 端子付き電線

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JP2000178451A (ja) * 1998-12-14 2000-06-27 Sumitomo Wiring Syst Ltd 熱可塑性樹脂、および防水コネクタ
JP5098890B2 (ja) * 2008-08-21 2012-12-12 住友電装株式会社 電線と端子金具との接続構造

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JP2000285983A (ja) * 1999-03-31 2000-10-13 Sumitomo Wiring Syst Ltd 自動車用アース端子の防水構造
JP2001167640A (ja) * 1999-12-09 2001-06-22 Yazaki Corp 被覆電線の端末接続部およびその防水処理装置
JP2008176970A (ja) * 2007-01-17 2008-07-31 Komatsu Ltd 圧着端子
JP2010165630A (ja) * 2009-01-19 2010-07-29 Autonetworks Technologies Ltd 端子付き電線

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012169124A (ja) * 2011-02-14 2012-09-06 Auto Network Gijutsu Kenkyusho:Kk 端子金具付き電線

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JP2012104234A (ja) 2012-05-31

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